How many times? Traditional Chinese Medicine has a prescription for you, the Su Nu Jing tells men how often they should ejaculate in a week, by age (including sex and masturbation I assume):
20-30: 1x per day for the average man, 2x per day for a man in good health, once every four days minimum
30-40: 1x every other day for the average man, 1x per day for a man in good health, once every eight days minimum
40-50: 1x every four days for the average man, 1x every three days for a man in good health, once every sixteen days minimum
It goes up beyond this, but I'm not getting into that, if you have a healthy sex drive after 50 you don't need some old text telling you to cut it out.
20-30: 1x per day for the average man, 2x per day for a man in good health, once every four days minimum
30-40: 1x every other day for the average man, 1x per day for a man in good health, once every eight days minimum
40-50: 1x every four days for the average man, 1x every three days for a man in good health, once every sixteen days minimum
It goes up beyond this, but I'm not getting into that, if you have a healthy sex drive after 50 you don't need some old text telling you to cut it out.